The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.

The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.

Date of Patent:
Jul. 16, 2019

Filed:

Feb. 17, 2015
Applicant:

Organo Corporation, Tokyo, JP;

Inventors:

Toru Nakano, Tokyo, JP;

Yudai Suzuki, Tokyo, JP;

Hiro Yoshikawa, Tokyo, JP;

Assignee:

ORGANO CORPORATION, Tokyo, JP;

Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C02F 1/44 (2006.01); B01D 61/04 (2006.01); B01D 61/02 (2006.01); B01D 65/02 (2006.01); C02F 1/76 (2006.01); B01D 61/58 (2006.01); C02F 101/30 (2006.01); B01D 61/14 (2006.01);
U.S. Cl.
CPC ...
C02F 1/441 (2013.01); B01D 61/025 (2013.01); B01D 61/04 (2013.01); B01D 61/58 (2013.01); B01D 65/02 (2013.01); C02F 1/766 (2013.01); B01D 61/145 (2013.01); B01D 2311/04 (2013.01); B01D 2311/12 (2013.01); B01D 2311/2649 (2013.01); B01D 2321/02 (2013.01); B01D 2321/04 (2013.01); B01D 2321/162 (2013.01); B01D 2321/164 (2013.01); B01D 2321/168 (2013.01); B01D 2321/18 (2013.01); C02F 1/442 (2013.01); C02F 1/444 (2013.01); C02F 2101/30 (2013.01); C02F 2209/06 (2013.01); C02F 2305/02 (2013.01);
Abstract

This filtration treatment system is provided with a membrane filtration device as a prefiltration treatment device for removing insoluble components from the water to be treated containing organic substance, a reverse osmosis membrane treatment device for subjecting the prefiltration-treated water to reverse osmosis membrane treatment, and a chemical agent supply pipe for supplying a chemical agent into the membrane filtration device, wherein the chemical agent contains a sulfamic acid compound, and a bromine-based oxidizing agent or the reaction product of a bromine compound with a chlorine-based oxidizing agent, or, contains the reaction product of a sulfamic acid compound with a bromine-based oxidizing agent or with the reaction product of a bromine compound with a chlorine-based oxidizing agent.


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